<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    let xin = ""
    for (let y = 1.5; y > -1.5; y -= 0.1) {
        let str = ""
        for (let x = -1.5; x < 1.5; x += 0.05) {
            let a = x * x + y * y - 1;
            if (a * a * a - x * x * y * y * y <= 0) {
                str += "*"
            } else {
                str += " "
            }
        }
        xin += str + "\n"
    }
    console.log(xin)
</script>
</body>
</html>